My tree fern is turning black?!?
I have a common Australian Tree fern about 10 yrs old planted outside in a shady location. It did well until about a year ago, when some of the fronds started turning black and drying out. Other fronds are OK, but may eventually do the same. I have 5-6 other healthy fern types very close by, and the ground is covered with a few vigorously growing rabbit's foot ferns. It's in a moist area, on a drip system (with a mister to moisten the trunk) soil is clay-ish but well mulched, and it was doing fine, until recently. It even spawned a couple babies.
These common tree ferns usually thrive in our climate. Anyone have any ideas about my sick fern?